JPH0810517A - Original liquid feeding device for filter press - Google Patents

Abstract

PURPOSE:To reduce the feeding pipings for an original liquid by providing an original liquid transfer hole in the seal surface of a filter plate to feed the original liquid also from the rear side of the group of filter plates. CONSTITUTION:A filter plate 3 is provided with an original liquid feeding pass 11 which is opened to front and back of the filter plate 3 and communicates with a filter bed 9 formed in a center recessed shape in the filter plate 3, and a transfer hole 12 which is opened to front and back of the filter plate 3 in seal surface 10 thereof. Each of moving heads 4 arranged at front and back of a group of filter plates 3... is provided with an original liquid feeding port 16 and a transfer port 17 respectively communicating with the original liquid feeding pass 11 and the transfer hole 12 of the filter plate 3. An original feeding pipe 18 is connected to each of the original liquid feeding port 16 and the transfer port 17 of one moving head 4, and the original liquid feeding port and the transfer port of the other moving head are connected by a communicative pipe. In this way, the original liquid is fed from both front and back of the filter plate group. Therefore, long and thick piping moving together with the moving head is not required to reduce the danger, and a dehydrator is simplified and maintenance is made easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an undiluted solution feeder for a filter press, and more particularly to an improvement of a multi-chamber undiluted solution feeder using a large number of filter plates.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for supplying a stock solution, for example, as shown in FIG.
An apparatus for supplying undiluted solution from one side of the filter plate row to the filtering chambers provided in parallel filter plates is provided in front of and behind the filter plates and is connected to the filtering chambers between the filter plates. ,well known. Also, in the case of a multi-chamber type filter press with many filter plates in parallel or a large filter press with a large filtration chamber,
An apparatus for supplying the stock solution from both ends of the filter plate group is also known as described in, for example, Japanese Utility Model Laid-Open No. 59-24106.

[0003]

However, in the filter press which feeds the undiluted solution from one side of the above-mentioned conventional apparatus, when it becomes a multi-chamber type, the filtration area becomes large, and the filtration chambers at the front end portion and the rear end portion become large. There will be a gap in the supply of undiluted solution.
Then, a difference in press-fitting pressure to each filtration chamber occurs, and there is a fear that the filter plate may be damaged. In addition, the cake pressure generated varies depending on the filtration chamber, and the water content may differ depending on the cake discharged. Moreover, in order to prevent the above drawbacks, it was necessary to enlarge the stock solution supply passage.
In addition, in order to eliminate these drawbacks, in the conventional device in which the stock solution is supplied from both sides of the filter plate group, thick pipes for supplying the stock solution are provided both before and after the filter plate group of the filter press. In addition, a wide space was required around the filter press in order to connect to the movable head that opens and closes. There is also a risk that the work near the filter press may be dangerous.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art. Its construction is such that a large number of filter plates are arranged in parallel on a rail supported between frames, and the filter plates are placed between these filter plates. In a filter press configured to supply undiluted solution to the formed filtration chamber from the front and rear of the filter plate group, the filter plate is connected to the filter bed which is opened in the front and rear of the filter plate and is formed in a concave shape in the filter plate. A stock solution supply path and a transfer hole that opens in the front and rear of the filter plate are provided in the sealing surface of the filter plate, and the stock solution of the filter plate is supplied to the movable heads arranged in the front and rear of the filter plate group. A stock solution supply port and a transfer port which are respectively connected to the passage and the transfer hole are provided, and a stock solution supply pipe is connected to each of the stock solution supply port and the transfer port of one movable head, and the stock solution of the other movable head is connected. The supply port and the transfer port are connected by a communication pipe.

[0005]

[Operation] When the filter plate group is closed and the undiluted solution is supplied from the undiluted solution supply pipe to the undiluted solution supply port and the transfer port of one of the movable heads, the undiluted solution supplied from the undiluted solution supply port is provided on the filter plate. It is supplied to the front surface of the filter bed of the filter plate through the stock solution supply path.
On the other hand, the stock solution supplied to the transfer port of the movable head passes through the transfer holes of the filter plates arranged in parallel and is supplied from the communication pipe to the supply port of the stock solution of the other movable head. Next, the stock solution is transferred to the stock solution supply port of the filter plate and supplied to the front surface of the filter bed of the filter plate.
That is, the undiluted solution supplied from the supply ports of the front and rear movable heads collides at the central portion of the supply path of the filter plate group while supplying the undiluted solution to the filtration chamber formed between the front and rear filter plates, and between the filter plates. The stock solution is sequentially supplied to the formed filtration chambers from the center thereof to the filtration chambers before and after the filtration chamber.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a stock solution supply device in a filter press according to the present invention will be described in detail with reference to the drawings.
In, the code 1 is the frame, and the code 2 is the frame 1.1
A rail bridged between the rails 2 and a large number of filter plates 3 ... A movable head 4.5 is provided before and after the filter plate group 3 ...
One end of the movable head 4.5 is connected to a drive chain 6 stretched endlessly along the rail 2, and the filter plate group 3
... can be opened and closed at the same time from the front and back. Reference numeral 7 is a link chain in which the filter plates 3.3 are loosely connected, and reference numeral 8 is a motor for driving the drive chain.

As shown in FIG. 2, the filter plate 3 is formed with a filter bed 9 having a concave shape on the front and rear surfaces thereof, and a sealing surface 10 is provided on the periphery of the filter bed 9. On the sealing surface 10 above the filtration bed 9, there is provided a feed passage 11 for the undiluted solution which is opened in front of and behind the filter plate 3 and has a groove communicating with the filtration bed 9. The sealing surface 10 on the back side of the filter plate 3 is provided with a transfer hole 12 that opens in front of and behind the filter plate 3. The lower sealing surface 10 of the filter plate 3 is opened at the front and rear of the filter plate 3 and the filter bed 9
There is a filtrate hole 13 provided with a through hole communicating with.
On the front and rear filtration surfaces of the filter plate 3, a filter cloth 15 suspended from a support bar 14 standing on the upper part of the filter plate 3 is stretched. When the filter plates 3.3 are closed, a filter chamber (not shown) is formed between the pair of filter cloths 15.15. At this time, the stock solution supply path 11 and the transfer hole 12
The filtrate holes 13 are sealed by the sealing surfaces 10 of the front and rear filter plates 3, ..., Forming communication holes.

In the movable heads 4.5 on both ends of the filter plate group 3 ..., the stock solution supply path 11 of the filter plate 3 and the stock solution supply port 16 and the transfer port, which communicate with the transfer hole 12, respectively. 17
Are provided. A stock solution supply pipe 18 is branched and connected to the stock solution supply port 16 and the transfer port 17 of one movable head 4. Further, the supply port 16 and the transfer port 17 for the stock solution of the other movable head 5 are connected by a communication pipe 19. Then, the space between the filter plates 3.3 is closed, and the stock solution supply pipe 18
When the undiluted solution is supplied from the undiluted solution, the undiluted solution is supplied from the supply port 1 of the movable head 4.
6 is press-fitted into the supply passages 11 ... of the filter plates 3 ..., and a part of the stock solution flows into the filtration chamber between the filter plates 3.3. The filtrate that has been solid-liquid separated by the filter cloth 15 passes through the filtration bed 9 of the filter plate 3, flows down into the filtrate hole 13, and is taken out of the filter press. On the other hand, the stock solution that has flowed from the transfer port 17 of the movable head 4 into the supply holes 13 of the filter plate 3 ... Communication pipe 19 to supply port 16 of head 5
The stock solution is supplied through. Supply port 16 of movable head 5
The stock solution supplied to the filter plate is pressed into the supply path 11 of the filter plate from the rear end of the filter plate group 3. That is, the undiluted solution is supplied before and after the filter plate group.

Another embodiment shown in FIG. 3 is a conceptual view of a filter press in which a filter plate group is opened and closed in one direction. In this device, a frame 1 is used instead of the one movable head 4 described above. It is composed of a fixed head that is fixed, and a feed port 16 and a transfer port 17 of the undiluted solution provided in this fixed head 4 are integrally arranged with the frame 1. In the above embodiment, the stock solution is supplied from the front and the rear of the filter plate group. However, in the case where the filtration chamber has 100 or more chambers, a stand is provided in the middle part and the sealing surface of the filter plate 3 is provided. It is also possible to newly provide an undiluted solution transfer hole 12 so that the undiluted solution is supplied also from the central portion of the filter plate group 3. Further, even if the undiluted solution supply path 11 of the filter plate 3 is provided in the central portion of the filter plate 3,
It may be provided at the bottom.

[0010]

The present invention is configured as described above,
When the stock solution is supplied to the filter press, the stock solution can be supplied from the rear side of the filter plate group through the transfer holes of the filter plate. That is, in the conventional device that supplies the stock solution from the front and rear of the filter plate group, it is necessary to provide the stock solution supply pipes on both the front and rear sides of the filter press. However, in the invention of the present application, since the undiluted solution transfer hole is provided in the sealing surface portion of the filter plate, it is possible to work with the movable head. It eliminates the need for moving long and thick pipes, reduces the risk, simplifies the dehydrator, and facilitates maintenance.

[Brief description of drawings]

FIG. 1 is a schematic side view of a stock solution supply device in a filter press according to the present invention.

FIG. 2 is a perspective view of a main part of a stock solution supply device according to the present invention.

FIG. 3 is a conceptual diagram of another embodiment of the stock solution supply device in the filter press according to the present invention.

[Explanation of symbols]

 1 Frame 2 Rail 3 Filter Plate 4 Movable Head (Fixed Head) 5 Movable Head 10 Sealing Surface 11 Undiluted Solution Supply Path 12 Transfer Hole 16 Undiluted Solution Supply Port 17 Transfer Port 18 Undiluted Solution Supply Pipe 19 Communication Tube

Claims (2)

[Claims] 1. A large number of filter plates 3 ... Are arranged in parallel on a rail 2 supported between frames 1.1, and a filter plate group 3 ... is placed in a filtration chamber formed between these filter plates 3.3. In the filter press in which the undiluted solution is supplied before and after the
In addition, the liquid feed path 11 for the undiluted solution which is open to the front and rear of the filter plate 3 and communicates with the filter bed 9 formed in the filter plate 3 in a concave shape, and the sealing surface 10 of the filter plate 3 have the filter plate 3 And a transfer hole 12 which is opened in front of and behind the filter plate group 3, and the movable head 4.5 arranged in front of and behind the filter plate group 3 ... Stock solution supply port 1 communicating with each
6 and a transfer port 17 are provided, and one movable head 4
A stock solution supply pipe 18 is connected to each of the stock solution supply port 16 and the transfer port 17, and the stock solution supply port 1 of the other movable head 5 is connected.
An undiluted solution supply device in a filter press, characterized in that 6 and a transfer port 17 are connected by a communication pipe 19. 2. The movable head 4 according to claim 1,
An undiluted solution supply device for a filter press, which has a fixed head fixed to the frame 1.